Wrong PIN. Phone picked up. Charger unplugged. SIM swapped. Pocket Guardian catches them all.

Pocket Guardian is the most complete Android app for protection against unauthorized access. The moment an intruder touches your device — it silently captures a front-camera selfie, timestamps the event, and saves every detail. No sound. No flash. No notification. The intruder never knows they were photographed.

PHOTO TRIGGERS — RANKED FROM MOST POWERFUL TO ADDITIONAL

① Wrong PIN on lock screen → silent intruder selfie [Device Admin required]
② SIM card removed, inserted or locked → photo on SIM theft attempt
③ SIM carrier changed → SIM swap detection — catches theft before you notice
④ Phone picked up while locked → photo before any PIN is entered
⑤ Phone moved from its place → hardware motion sensor captures physical movement
⑥ Charger disconnected → photo when unplugged from outlet or power bank
⑦ Successful unlock → who opened your phone and exactly when
⑧ Charger connected → silent photo on connection
⑨ Headset disconnected or connected → silent photo
⑩ Wrong PIN inside Pocket Guardian → who is trying to open the app
⑪ Successful Pocket Guardian login → full audit trail of security app access

PHOTO QUALITY — THREE MODES

Eco — smallest file size. Perfect for slow or expensive mobile data and limited storage.
Standard — balanced quality and size. Face clearly visible, instant Drive sync.
High — maximum detail and sharpness. Clear evidence when it really matters.

KEY FEATURES

Device Administrator — intercepts wrong PINs directly on the Android lock screen
SIM swap detection — catches the number one phone theft technique
Watchdog 24/7 — survives forced kills, Doze mode, battery optimization and reboots
Silent selfie — camera fires in under one second, no sound, no flash
You choose the camera — front for an intruder portrait or rear to capture surroundings
11 independent triggers — each with its own log switch and photo switch
Photo overlays — date/time, device model and Android ID burned onto each photo
Filter by event type — isolate wrong PINs, pickups, SIM, charger or app login events
Filter by date — select any time period in the event log
Statistics — charts by day and hour, breakdown by event type, peak activity hours
Storage control — you set the maximum number of stored events, old ones deleted automatically
PBKDF2 PIN protection — military-grade key derivation standard
Secret recovery question — regain access without factory reset or data loss

REAL SCENARIOS

"Left my phone on a cafe table." — Wrong PIN + pickup. Two selfies, exact timestamps.
"Phone disappeared from hotel nightstand." — SIM removal photo caught the thief's face.
"Charger unplugged at the airport." — Instant photo on disconnect.
"Kid grabbed my phone while I slept." — Successful unlock. Photo and time recorded.
"Colleague browsed my phone uninvited." — Motion sensor + screen wake. Both events logged.
"Phone taken overnight." — Chain: pickup → charger connected → unlock.

COMPATIBILITY

Android 8.0+. Tested on Xiaomi HyperOS, Samsung One UI, Google Pixel, OnePlus, OPPO, Motorola, Sony Xperia.

PREMIUM — ONE TIME, YOURS FOREVER

Theft alarm — full volume ringtone on any event. Stops only when you open the app
Active schedule — monitoring only during selected hours and days of the week
Google Drive backup — photos and log sync after every event. Data safely stored on your Google Drive — even if the phone is lost, stolen or factory reset
App alias — replace the app name in the notification shade and login screen with any system-looking name

PRIVACY

All photos and logs stored on your device only. Nothing sent to any server. Drive sync goes only to your own Google account. No ads. No tracking. No account required.

pocketguardian.github.io
pocketguardian.app@gmail.com